Creative financing question.

[Uy NGUYEN]

I bought a house with big (3 potential new lot) lot and like to short plat it. . It still carries a mortgage, ( but home with the new lot line still with good substantial equity)

Plan A: Has any one on here done a partial release interest with the bank/ success story /negotiating terms ? Would love to hear them how to go about.

Plan B: Any Refi Mortgage company on a home with partial prelim plat? 

Plan C: Private money idea to clear mortgage lien, and carry the note for 1-1.5 years due to short plat process?

Thanks in advance.